For this case we have:
Polynomial 1: P (x) = 9-3x ^ 2
Polynomial 2: Q (x) = - 8x ^ 2 + 4x + 5
Sorting the polynomials:
Polynomial 1: P (x) = - 3x ^ 2 + 9
Polynomial 2: Q (x) = - 8x ^ 2 + 4x + 5
Adding term to term (similar) we have:
P (x) + Q (x) = (- 3-8) x ^ 2 + (0 + 4) x + (9 + 5)\\P (x) + Q (x) = - 11x ^ 2 + 4x + 14
Answer:
A (x) = P (x) + Q (x) = - 11x ^ 2 + 4x + 14
